package dao.hibernate;

import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

/**
 * Utilities for Hibernate.
 */
public class HibernateUtil {

    /** Session factory. */
    private static final SessionFactory SESSION_FACTORY = buildSessionFactory();

    /**
     * Build a session factory.
     *
     * @return  a session factory
     */
    private static SessionFactory buildSessionFactory() {
        try {
            // Create the SessionFactory from hibernate.cfg.xml
            return new Configuration().configure().buildSessionFactory();
        } catch (Throwable ex) {
            // Make sure you log the exception, as it might be swallowed
            System.err.println("Initial SessionFactory creation failed." + ex);
            throw new ExceptionInInitializerError(ex);
        }
    }

    /**
     * Getter.
     *
     * @return  the session factory
     */
    public static SessionFactory getSessionFactory() {
        return SESSION_FACTORY;
    }

}
